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Selecting timber framing

By Anna Smith 1 October 2006, Build 96

A designer needs to select the right timber for their design. This means choosing the correct level of treatment for the situation and the right grade for the spans and loadings nominated.

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Sizing rafters

By Tom Edhouse 1 June 2014, Build 142

NZS 3604:2011 Timber-framed buildings sets out how to size rafters in table 10.1. The BRANZ technical helpline has received queries on doing this, so let’s step through some examples.

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Reinventing basic materials

By David Hindley 1 April 2022, Build 189, Feature article

World-class research, award-winning designs and a new mindset are all helping New Zealand manufacturers, architects and designers take a fresh approach to those most fundamental of building materials – concrete, steel and timber.

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Treating cut ends of timber

By Eddie Bruce 1 December 2003, Build 79

When preservative-treated timber is cut, shaped, planed or drilled, the newly revealed timber may not be protected by preservative and end grain may be exposed. Additional treatment may be needed to protect the cut ends.

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New timber treatment requirements

By Russell Black 1 June 2004, Build 82, Feature article

Various activities are underway in the building industry in response to weathertightness problems and some steps have now been taken. One is the recent revision of the Acceptable Solution for B2 Durability. A key issue in this revision has been setting minimum levels of timber treatment for selected parts of a building through reference to the (also) revised standard NZS 3602. This feature discusses some important consequences of these revisions.

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